Granted Patent
Utility
US 4,583,592 · App. 06/604,502
Well test apparatus and methods
Inventors:
Imre I. Gazda, Phillip S. Sizer
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Apr 27, 1984
Inventors
Imre I. Gazda
Phillip S. Sizer
Assignee (at issue)
Otis Engineering Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.